perturbation

  1. an unhappy and worried mental state
  2. activity that is an intrusion or interruption
  3. a disposition that is confused or nervous and upset
  4. the act of causing disorder

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Perturbation

Any change to any ecosystem.
Found on http://www.encyclo.co.uk/visitor-contributions.php

Perturbation

A slight nudge.
Found on http://www.encyclo.co.uk/local/20090

Perturbation

See Orbital Perturbation.
Found on http://www.encyclo.co.uk/local/20195

perturbation

[n] - (physics) a secondary influence on a system that causes it to deviate slightly 2. [n] - activity that is an intrusion or interruption 3. [n] - a disposition that is confused or nervous and upset
Found on http://www.webdictionary.co.uk/definition.php?query=perturbation

Perturbation

Per`tur·ba'tion noun [ Latin perturbatio : confer French perturbation .] 1. The act of perturbing, or the state of being perturbed; esp., agitation of mind. 2. (Astron.) A disturbance in the regular elliptic or other motion of a heavenly body, produced by some forc...
Found on http://www.encyclo.co.uk/webster/P/63

perturbation

1. The act of perturbing, or the state of being perturbed; especially, agitation of mind. ... 2. <astronomy> A disturbance in the regular elliptic or other motion of a heavenly body, produced by some force additional to that which causes its regular motion; as, the perturbations of the planets are caused by their attraction on each other. ......
Found on http://www.encyclo.co.uk/local/20973

perturbation

fluster noun a disposition that is confused or nervous and upset
Found on https://www.encyclo.co.uk/local/20974

Perturbation

• (n.) A disturbance in the regular elliptic or other motion of a heavenly body, produced by some force additional to that which causes its regular motion; as, the perturbations of the planets are caused by their attraction on each other. • (n.) The act of perturbing, or the state of being perturbed; esp., agitation of mind.Perturbation: ...
Found on http://thinkexist.com/dictionary/meaning/perturbation/

perturbation

in astronomy, deviation in the motion of a celestial object caused either by the gravitational force of a passing object or by a collision with it. ... [7 related articles]
Found on http://www.britannica.com/eb/a-z/p/48

perturbation

in mathematics, method for solving a problem by comparing it with a similar one for which the solution is known. Usually the solution found in this ... [1 related articles]
Found on http://www.britannica.com/eb/a-z/p/48

perturbation

perturbation 1. A small change in a physical system, most often in a physical system at equilibrium that is disturbed from the outside. 2. A cause of mental disquiet, disturbance, or agitation. 3. Variation in a designated orbit, as of a planet, that results from the influence of one or more external bodies. Gravitational attraction between plane...
Found on http://www.wordinfo.info/words/index/info/view_unit/2197/

Perturbation

An imprecise term that means changing some parameter value (or function) and seeing what effect this has on the solution. This embodies continuity and differentiability properties of the optimal responses: objective value, policy set, and perhaps dual values too. This is what is sometimes called marginal analysis of solutions, and changes are limi....
Found on http://glossary.computing.society.informs.org/index.php?page=P.html

perturbation

In general, a slight nudge that, temporarily or permanently, displaces an object or system out of equilibrium. In astronomy, a change in the orbit of a body, usually as a result of the gravitational effect of another, typically much larger, body. The planets mutually perturb one another; the orbit...
Found on http://www.daviddarling.info/encyclopedia/P/perturbation.html

perturbation

perturbation (pŭr"turbā'shun) , in astronomy and physics, small force or other influence that modifies the otherwise simple motion of some object. The term is also used for the effect produced by the perturbation, e.g., a change in the object's energy or path of motion. One impor...
Found on http://www.infoplease.com/ce6/sci/A0838535.html

perturbation

A disruption or disturbance.
Found on http://www.cancer.gov/dictionary?expand=P

Perturbation

[biology] ==Summary== I found this photo on nydivided.org and I know that it was published in the United States before 1923 because the man died in 1840. ...
Found on http://en.wikipedia.org/wiki/Perturbation_(biology)

Perturbation

[geology] Perturbation (from Latin: perturbare `to confuse, disorder, disturb,` from per- `through` + turbare `disturb, confuse,` from turba `turmoil, crowd`) is a set of Pedology (soil study) and sedimentary geology processes relating to changes in the nature of water-borne alluvial sediments and in situ soil deposits over time. ...
Found on http://en.wikipedia.org/wiki/Perturbation_(geology)

Perturbation

[astronomy] In astronomy, perturbation is the complex motion of a massive body subject to forces other than the gravitational attraction of a single other massive body. The other forces can include a third (fourth, fifth, etc.) body, resistance, as from an atmosphere, and the off-center attraction of an oblate or otherwise misshapen body. =...
Found on http://en.wikipedia.org/wiki/Perturbation_(astronomy)

Perturbation

Modifications to simple conic section orbits caused by such disturbances as air drag, non-uniformity of the Earth, and gravitational fields of more distant bodies such as the Moon.
Found on http://www.braeunig.us/space/glossary.htm
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